Low-loss semiconductor switching circuit
US4426589A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1981 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Dec 21, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/08146
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
To reduce further switching energy arising upon changing-of-state of a semiconductor switch pair, connected to a load (17), particularly an inductive load, switching dissipating networks (6, 7), each including a storage capacitor (9, 12) which receive and accept switching energy in the respective semiconductor switch (4, 5), are interconnected by an additional network (15, 16; 20; 21-26) to place the respective capacitors, effectively, in parallel for additional energy storage and provide a single network for current flow upon changing-of-state of the respective switch to the capacitors, the energy represented by the current flow being retrievable by forming the additional network (FIG. 3), for example, as a voltage converter, e.g. a blocking oscillator, permitting feedback of the recovered switching energy to a supply source (1, 3) which may be a storage battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.